Orphanet epidemiological data:

GeneReviews:

23

Penetrance
The penetrance for familial pnkd is greater than 90% in both males and females [fink et al 1997, jarman et al 1997, tomita et al 1999, lee et al 2004]. lee et al [2004] determined that 50 of 52 individuals with a pnkd pathogenic variant had the phenotype; the remaining two individuals were too young for phenotype to be clarified. bruno et al [2007] calculated the penetrance of pnkd in individuals with pnkd pathogenic variants to be 98%; the asymptomatic individual in the study was too young to be considered unaffected...

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Summaries for Familial Paroxysmal Nonkinesigenic Dyskinesia

Genetics Home Reference
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Familial paroxysmal nonkinesigenic dyskinesia is a disorder of the nervous system that causes episodes of involuntary movement. Paroxysmal indicates that the abnormal movements come and go over time. Nonkinesigenic means that episodes are not triggered by sudden movement. Dyskinesia broadly refers to involuntary movement of the body.